<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>2018/11/15</title>
    <link rel="stylesheet" href="./bootstrap.css">
    <!--好的代码像粥一样,是得用时间和精力熬的。-->
</head>
<body>
  <div class="container">
      <div class="row">
          <div class="col-xs-3 col-sm-4 col-md-6 text-center bg-danger">1</div>
          <div class="col-xs-4 col-sm-4 hidden-md text-center bg-primary">2</div>
          <div class="col-xs-5 col-sm-4 col-md-6 text-center bg-success">3</div>
      </div>
      <div class="row">
          <table class="table">
              <tr>
                  <td>1</td>
                  <td>2</td>
                  <td>3</td>
              </tr>
              <tr>
                  <td>4</td>
                  <td>5</td>
                  <td>6</td>
              </tr>
          </table>
      </div>
  </div>
</body>
</html>